In the study, these compounds produced pain relief as strong as morphine in mice, without the unwanted side effects associated with opioid pain relievers.

It’s too early to say whether the same will hold true in humans.

But researchers say the results suggest the snake venom compounds relieve pain by targeting a different pain pathway in the brain. And that could eventually lead to a new generation of pain killers for people.

“It is essential to understand pain better to develop new analgesics,” researcher Sylvie Diochot of the Institut de Pharmacologie Mole ́culaire et Cellulaire, in Valbonne, France, and colleagues write in Nature. The black mamba findings, she says, help with both of those goals.

The black mamba snake is Africa’s longest venomous snake and grows up to 14 feet in length. Its aggressive nature and lethal venom has given it a reputation as the world’s deadliest snake.